root canal orifice

Methods: The root canal with root canal orifice burs and helical drilling bits were prepared in advance.

方法：采用根管口台阶状车针与螺旋型根管钻组合起来扩大根管。

互联网摘选

Applied anatomy on shape and location of root canal orifice in maxillary first permanent molar.

上颌第一磨牙根管口形态、位置的应用解剖.

网络文摘精选

Methods: The root canalroot canal orifice burs and helical drilling bits were prepared in advance.

方法: 采用根管口台阶状车针与螺旋型根管钻组合起来扩大根管.

互联网摘选